Leroy

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Everything you know is wrong: lasers are cooling things now

A group of scientists at the University of Washington were able to successfully refrigerate water using an infrared laser. This is a big deal because researchers weren't even sure this was possible as water tends to heat up when illuminated. However, by using an infrared laser and nanocrystal, it …

University of Washington

A family in public housing makes $498,000 a year. And HUD wants tenants like this to stay.

<i>Editor’s note: The Post has learned that this article contained three paragraphs with sentences that were largely duplicated, without attribution, from a story on the Government Executive website. It is the Post’s policy that the use of material from other news organizations or sources must be</i> …

Why did the Neanderthals die out?

The puzzle is one of the greatest surrounding our species. On a planet that bristled with different types of human being, including Neanderthals and …

8 Ways to Protect Your Home Against Tornadoes and Hurricanes

If an EF5 tornado barrels over your home, there's not much you can do about it. But there is a compendium of technology available to prepare your house in case disaster strikes.<p>If an EF5 tornado barrels over your home, there's not much you can do about it. But barring the very worst, there is a …

Weather

6 Top Shop Vacuums, Tested

When it comes to heavy-duty cleanup, the trusty shop vacuum is the go-to tool. We put six to work, letting them compete head-to-head in a race to pick up 15 pounds of sawdust mixed with nuts and bolts. Here's what we learned.<p>When it comes to heavy-duty cleanup, the trusty shop vacuum is the go-to …

Woodworking

Make Your Own DIY Solar Charger

Keep your gadgets powered even when you’re off the grid.<p><b>MATERIALS</b><br>Plywood<br>Jigsaw<br>Drill<br>Nails<br>Hammer<br>Two 1-inch (2.5 cm) wood slats<br>5-watt, 12-volt solar panel<br>Hinge<br>Soldering iron and solder ¼-inch (6.35-mm) plastic mono plug<br>Cigarette-lighter Y adapter<br>12-volt 12AH rechargeable battery<br>Solar DC charger …

Gray Matter: Watch A Hybrid Rocket Burn From The Inside Out

Seeing through a rocket engine is easier than you might think.<p>Space tourism front-runner Virgin Galactic hopes to launch customers toward the edge of space later this year. To get them there, in a winged craft called SpaceShipTwo, the company will light up hybrid-fuel rockets.<p>Hybrid-fuel engines …

Build Your Own Resistor Substitution Decade Box

Dial in the resistor you need and avoid digging through messy electronics bins.<p>If your desk isn't cluttered, you aren't doing your job. Gadget-building geeks know this adage well, thanks to resistors. The tiny components police electricity's flow, yet it can take dozens of kinds to perfect a …

2 DIY Printers That Would've Impressed Gutenberg

Inventive ink!<p>Now : Bioprinter<p>If office printers can build images by spraying tiny blobs of ink onto paper, why couldn't they also print in living cells? The question compelled Patrik D'haeseleer and a few collaborators at Biocurious, a biohackerspace in Sunnyvale, California, to build a machine …

Gene Machine

A pipe that copies DNA using the heat of a lightbulb.<p>Biology's equivalent of an office copier is a PCR machine. PCR, short for polymerase chain reaction, is now a staple in crime-scene forensics, heredity tests, and organism hijacking. It's a mind-boggling feat. Among billions of base pairs that …

This Newer, Stronger 3-D Printed Gun Costs Just $25

A Wisconsin engineer has produced a cheaper, more durable version of Defense Distributed's 3-D printed pistol on an inexpensive, consumer-grade printer.<p>Defense Distributed's plastic, 3-D printed "Liberator" single-shot handgun was here for a moment and then it was gone in more than one sense. For …

Feds tap tech startups to cut costs

The feds are finding that new technology aimed at getting more tech startups to vie for work can yield big savings.<p>An experimental, easy-to-use system for receiving low-dollar federal contract bids saved as much as 44 percent on tech-related projects and prompted 270 new companies to sign up as …

Precognitive robot knows you need help before you do

A new robot developed by researchers at Cornell University isn't only capable of assisting you with tasks, it can accurately predict when you might need a hand. Armed with a Kinect sensor, the robot — developed by Ashutosh Saxena and his team of computer scientists — utilizes a dataset of 120 …

How to Raise a Tech-Savvy Kid

When is a kid ready for her first computer? How do you nurture a child's knack for tinkering? PopMech Senior Tech Editor and techie dad Glenn Derene has the answers.<p><b>When I was 14 years old</b> I got my first computer. It was 1986, and my father took advantage of a deal with a local bank that was …

Raspberry Pi

Samsung Galaxy Note 8 with AT&T-compatible LTE passes FCC

If the Samsung Galaxy Note 8.0 struck you as something that could be your next cellphone, well, I’m not going to judge you. What I am going to do instead is let you know that if you’re in the U.S. and your choice of carrier is AT&T, then there’s some good bit of news that you need to hear regarding …

Dell Is The Wrong Way To Play PC Comeback

In the years I have been trading and interacting with other investors of all kinds, I have found that acquisitions provide a tremendous source of excitement, but they can also be a breeding ground for horrendous mistakes.<p>Activist investors like Carl Icahn, T. Boone Pickens, Daniel Loeb and others …

Obama will confront Chinese president over hacking

After allegations over breached weapons systems, cyberattacks will be discussed when leaders meet next week<p>While Chinese officials continue to deny reports from security firms that a military unit on the outskirts of Shanghai has been carried out sustained and increasingly serious cyberattacks …

Intel says it bought ST-Ericsson's GPS operations

Intel has confirmed it was the mystery buyer that acquired ST-Ericsson's global navigation satellite system (GNSS) business, after the sale was announced Tuesday.<p>ST-Ericsson, the joint venture between STMicroelectronics and Ericsson, said Tuesday that a "leading semiconductor company" had bought …

Internet of Things

One sign Intel is going to make its own reference phones: It just bought the GPS navigation unit of ST-Ericsson

For $90 million, Intel just acquired the whole of ST-Ericsson’s unit responsible for creating microchips that allow navigation via GPS satellites. It’s the first acquisition for Intel’s new CEO, Brian Krzanich, who has only been on the job for 12 days.<p>The unit Krzanich just bought for a song has …

Tim Cook: Apple has not lost its touch

Apple chief executive Tim Cook moved to reassure investors that the company has not lost its touch, by telling them that it has several “game changers” in the pipeline.<p>Investors in the technology company have been rattled in recent months by an apparent slowdown in new product launches. However, Mr …

Tim Cook

Samsung Galaxy S4 Mini specs

The specifications of the Samsung Galaxy S4 Mini have apparently been outed by German site All About Samsung.<p>The source cited by the site provided a screenshot of the AnTuTu benchmark running on the device, revealing some of the specifications of the device. The Galaxy S4 Mini is said to be …

Pentagon leak reveals tensions

Chinese hackers may rank high on the military’s list of enemies <b>—</b> but back in Washington, they sometimes double as one of the Pentagon’s greatest political assets.<p>A steady stream of cyberattacks targeting everything from U.S. weapons systems to corporate trade secrets has provided the Defense …